Delta Electronics Series S48SS manual Turn-on transient at zero load current 10 ms/div. Top

ELECTRICAL CHARACTERISTICS CURVES

Figure5: Turn-on transient at zero load current (10 ms/div). Top	Figure 6: Output voltage response to step-change in load
Trace: Vout (5V/div); Bottom Trace: ON/OFF Control (2V/div).	current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load
	cap: 10µF, 100 mΩESR	tantalum capacitor and 1µF
	ceramic capacitor. Top Trace: Vout (50mV/div), Bottom
	Trace: Iout (0.5A/div).

is
TEST	Vi(+)
12uH
Cs:68uF/100V	68uF/100V
ESR< 0.3Ω	ESR< 0.3Ω
﹫20℃100KHz	﹫20℃100KHz
	Vi(-)

Figure 7: Test set-up diagram showing measurement points for Input Reflected Ripple Current (Figure 8).

Note: Measured input reflected-ripple current with a simulated source Inductance (LTEST) of 12 µH. Capacitor Cs offset possible battery impedance.

Figure 8: Input Reflected Ripple Current, is, at full rated output current and nominal input voltage with 12µH source impedance and 68µF electrolytic capacitor (2 mA/div)

4

DS_s48SS12001_06082006